aside
  position: fixed
  top: 50px
  bottom: 0
  left: 0
  width: 95px
  background: #f4f4f4
  z-index: 9
  ul
    padding: 25px 0
  li
    margin-bottom: 25px
    text-align: center
  a
    position: relative
    display: block
    width: 95px
    font-size: 14px
    color: #727e97
    p
      padding-top: 3px
    span.iconfont
      font-size: 28px
    &.active
      color: #4180f3
      &:before
        position: absolute
        left: 0
        top: 0
        content: ""
        display: block
        width: 5px
        height: 55px
        background: #2981ff

